code: def test_empty_arithmetic_hash(
      data1: ActionObject, empty1: ActionObject
  ) -> None:
      """Test that we can recreate the correct hash history using Empty Objects"""
      result1 = data1 + data1
      result2 = empty1 + empty1
  
      assert result1.syft_history_hash == result2.syft_history_hash
  
file_path: PySyft/packages/syft/tests/syft/code_verification_test.py
imports: import numpy
  import pytest
  from syft.service.action.action_data_empty import ActionDataEmpty
  from syft.service.action.action_object import ActionObject
  from syft.service.action.numpy import NumpyArrayObject
label_desc: Use image node_id 10 for calling a global function with example usage: test_empty_arithmetic_hash(data1, empty1) without return types